Heartbeat - manage your Rails Apps from a web control panel

Heartbeat is a single-web page control panel that lets you run any rake task within your application’s directory, from deployment to tests to migrations. If you can write a rake task, Heartbeat can execute it! Additionally, you can use it to monitor the uptime of your URLs.

The app makes extensive use of RJS templates and AJAX.

Heartbeat was built by myself (Derek Haynes) and Charles Brian Quinn of Highgroove Studios during the 24-Hour coding marathon that was Rails Day 2006.